On 9/21/15 9:14 PM, Jarod Wilson wrote: > Just switching to adapter->io_addr everywhere seems to not work as > noted above. :\ Note that I'm also chasing this from the other end > with the author of the pci patches that seem to have triggered this, > so the real bug might be over in pci-land, but hardening against > explosions in igb still seems like a worthwhile effort here.
My understanding is that there can be problems if too many writes to a removed device happen. That is why ixgbe avoids doing that by testing for removal in some places. The io_addr does get used in the transmit path simply to avoid adding a test to that hot path. That approach seems to be working well for ixgbe.
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